利用基于多边形网格的有限容积法计算程序,考察了由三角形网格生成的三种多边形网格用于求解层流N-S方程组的数值特征.结果表明,收敛特性与多边形的构造方法无关,但计算结果的精度与网格类型有关,满足局部正交的PEBI网格精度最高,而由三角形形心相连构成的多边形精度较差.就方腔自然对流问题而言,在边界附近铺几层正交网格有利于提高努谢尔特数的精度.
参考文献
| [1] | 陶文铨.数值传热学[M].西安:西安交通大学出版社,2001 |
| [2] | Jeffrey A-Wright .An Edge-Based Method for the Incom-pressible Navier-Stokes Equations on Polygonal Meshes[J].Journal of Computational Physeics,2001,168:24-43. |
| [3] | de Vasconcellos JFV;Maliska CR .A finite-volume method based on Voronoi discretization for fluid flow problems[J].Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology,2004(4):319-342. |
| [4] | Fue-Sang Lien .A pressure-based unstructured grid method for all-speed flows[J].International Journal for Numerical Methods in Fluids,2000(3):355-374. |
| [5] | Date A W .Solution of Navier-Stokes Equations on Non-Staggered Grids at All Speeds[J].Numerical Heat Transfer Part B,1995,29:441-467. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%